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首页> 外文期刊>Journal of Materials Engineering and Performance >Direct Blue Dye Degradation Using Titanium Nanostructures Under Energy-Efficient UV-LED Irradiation
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Direct Blue Dye Degradation Using Titanium Nanostructures Under Energy-Efficient UV-LED Irradiation

机译：在节能UV-LED辐射下使用钛纳米结构直接降解蓝染料

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摘要

The present study describes the effect of titanium dioxide (TiO2) morphology on the photocatalytic activity under irradiation of ultraviolet light-emitting diode (UV-LED). Different TiO2 nanostructures were synthesized using hydrothermal (nanotubes and nanospheres) and solvothermal (nanoflowers) methods. The morphology, phase composition, bandgap, and chemical properties of the synthesized different TiO2 nanostructures were characterized using x-ray diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet visible diffuse reflectance spectroscopy (UV-Vis DRS), and Brunauer-Emmett-Teller (BET) analysis. The surface area of the nanotubes was larger than that of the nanospheres and nanoflowers by four-and three-fold, respectively. The photocatalytic activity of the photocatalysts was evaluated by degradation of direct blue-15 dye under UV-LED irradiation in a slurry-type reactor. The photocatalytic activity of the TiO2 nanoflowers was higher than that of TiO2 nanotubes or nanospheres, suggesting that nanoflowers can serve as efficient photocatalysts for dye degradation.
机译：本研究描述了二氧化钛（TiO2）形态对紫外发光二极管（UV-LED）照射下光催化活性的影响。使用水热（纳米管和纳米球）和溶剂热（纳米花）方法合成了不同的TiO2纳米结构。使用X射线衍射，扫描电子显微镜，透射电子显微镜，紫外可见漫反射光谱（UV-Vis DRS）和Brunauer-Emmett-x表征了合成的不同TiO2纳米结构的形态，相组成，能隙和化学性质。柜员（BET）分析。纳米管的表面积分别比纳米球和纳米花的表面积大四倍和三倍。通过在淤浆型反应器中在UV-LED照射下直接蓝15染料的降解来评估光催化剂的光催化活性。 TiO2纳米花的光催化活性高于TiO2纳米管或纳米球的光催化活性，表明纳米花可以用作染料降解的有效光催化剂。

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